Home / 3,001.97-4,142.46-1,939.78

Finding the Fourth Proportional to 3,001.97, 4,142.46 and 1,939.78

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Solution

The fourth proportional to 3,001.97, 4,142.46 and 1,939.78 is: 2,676.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,001.97 : 4,142.46 = 1,939.78 : x
  2. Step 2: Convert to fraction form
    3,001.97/4,142.46 = 1,939.78/x
  3. Step 3: Cross multiply
    3,001.97x = 4,142.46 × 1,939.78
  4. Step 4: Simplify right side
    3,001.97x = 8,035,461.06
  5. Step 5: Solve for x
    x = 8,035,461.06/3,001.97
  6. Step 6: Final answer
    x = 2,676.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.